usb: typec: ucsi: register DP only for NVIDIA DP VDO (c2ae4928) · Commits · 戴 / test

drivers/usb/typec/ucsi/ucsi.c

+10 −2

Original line number	Diff line number	Diff line
		@@ -270,9 +270,16 @@ static int ucsi_register_altmode(struct ucsi_connector *con,

		switch (desc->svid) {
		case USB_TYPEC_DP_SID:
		case USB_TYPEC_NVIDIA_VLINK_SID:
		alt = ucsi_register_displayport(con, override, i, desc);
		break;
		case USB_TYPEC_NVIDIA_VLINK_SID:
		if (desc->vdo == USB_TYPEC_NVIDIA_VLINK_DBG_VDO)
		alt = typec_port_register_altmode(con->port,
		desc);
		else
		alt = ucsi_register_displayport(con, override,
		i, desc);
		break;
		default:
		alt = typec_port_register_altmode(con->port, desc);
		break;
		@@ -475,7 +482,8 @@ static void ucsi_unregister_altmodes(struct ucsi_connector *con, u8 recipient)
		while (adev[i]) {
		if (recipient == UCSI_RECIPIENT_SOP &&
		(adev[i]->svid == USB_TYPEC_DP_SID \|\|
		adev[i]->svid == USB_TYPEC_NVIDIA_VLINK_SID)) {
		(adev[i]->svid == USB_TYPEC_NVIDIA_VLINK_SID &&
		adev[i]->vdo != USB_TYPEC_NVIDIA_VLINK_DBG_VDO))) {
		pdev = typec_altmode_get_partner(adev[i]);
		ucsi_displayport_remove_partner((void *)pdev);
		}

+7 −0

Original line number	Diff line number	Diff line
		@@ -340,4 +340,11 @@ static inline void
		ucsi_displayport_remove_partner(struct typec_altmode *adev) { }
		#endif /* CONFIG_TYPEC_DP_ALTMODE */

		/*
		* NVIDIA VirtualLink (svid 0x955) has two altmode. VirtualLink
		* DP mode with vdo=0x1 and NVIDIA test mode with vdo=0x3
		*/
		#define USB_TYPEC_NVIDIA_VLINK_DP_VDO 0x1
		#define USB_TYPEC_NVIDIA_VLINK_DBG_VDO 0x3

		#endif /* __DRIVER_USB_TYPEC_UCSI_H */